# -*- coding: utf-8 -*-
from __future__ import unicode_literals

from django.db import migrations, models
import django.db.models.deletion


class Migration(migrations.Migration):

    dependencies = [
        ('hmi', '0004_auto_20151130_1502'),
    ]

    operations = [
        migrations.AlterField(
            model_name='processflowdiagramitem',
            name='variable',
            field=models.ForeignKey(default=None, blank=True, to='pyscada.Variable', null=True, on_delete=models.SET_NULL),
        ),
    ]
